Blog: v20.19.5 release post

[marco-ippolito]

Refs: nodejs/node#59551

Description

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Check List

• I have read the Contributing Guidelines and made commit messages that follow the guideline.
• I have run pnpm format to ensure the code follows the style guide.
• I have run pnpm test to check if all tests are passing.
• I have run pnpm build to check if the website builds without errors.
• I've covered new added functionality with unit tests if necessary.

[vercel]

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Project	Deployment	Preview	Updated (UTC)
nodejs-org	Ready	Preview	Sep 3, 2025 6:25pm

[Copilot]

Pull Request Overview

This PR adds a new blog post for the Node.js v20.19.5 (LTS) release. The release post documents the latest Long Term Support version update with security fixes, dependency updates, and bug fixes.

• Creates a new release announcement blog post for Node.js v20.19.5 'Iron' LTS
• Documents notable changes including new collaborator additions and TSC member updates
• Provides comprehensive commit history and download links with cryptographic signatures

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[github-actions]

Lighthouse Results

URL	Performance	Accessibility	Best Practices	SEO	Report
/en	🟢 95	🟢 100	🟢 100	🟢 100	🔗
/en/about	🟢 100	🟢 97	🟢 100	🟠 88	🔗
/en/about/previous-releases	🟢 96	🟢 93	🟢 100	🟢 100	🔗
/en/download	🟢 93	🟢 100	🟢 100	🟢 100	🔗
/en/download/archive/current	🟢 98	🟢 100	🟢 100	🟢 100	🔗
/en/blog	🟢 98	🟢 100	🟢 96	🟢 100	🔗